91622285 has 4 divisors (see below), whose sum is σ = 109946748. Its totient is φ = 73297824.

The previous prime is 91622269. The next prime is 91622309. The reversal of 91622285 is 58222619.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54922921 + 36699364 = 7411^2 + 6058^2 .

It is a cyclic number.

It is not a de Polignac number, because 91622285 - 2⁴ = 91622269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9162224 + ... + 9162233.

It is an arithmetic number, because the mean of its divisors is an integer number (27486687).

Almost surely, 2^91622285 is an apocalyptic number.

It is an amenable number.

91622285 is a deficient number, since it is larger than the sum of its proper divisors (18324463).

91622285 is a wasteful number, since it uses less digits than its factorization.

91622285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18324462.

The product of its digits is 17280, while the sum is 35.

The square root of 91622285 is about 9571.9530400018. The cubic root of 91622285 is about 450.8170915922.

The spelling of 91622285 in words is "ninety-one million, six hundred twenty-two thousand, two hundred eighty-five".